Guide for guiding the cutting of a piece of plasterboard, and kit and method for the implementation thereof

Abstract

The aim of the invention is to provide a solution for guiding the cutting of a piece of plasterboard, which can be rapidly implemented, and does not require any finishing step for refilling the surface of the piece of plasterboard. To this end, the invention relates to a guide element ( 200 ) for guiding the cutting of a piece of plasterboard, said guiding element having two longitudinal edges and two ends, for guiding a cutting blade, during operation, parallel to the guiding element, said guiding element also comprising, at least on one end, a rotatably mounted abutment ( 210 ) provided with means ( 211 ) for holding the abutment against the piece of plasterboard.

1 . A guide for cutting a plasterboard and having two longitudinal edges and two ends, in order, in use, to guide a cutting blade in a manner parallel to the guide, comprising, at least at one end, a stop rotatably mounted and provided with retaining means that hold the stop against the plasterboard, characterized in that it comprises retaining means arranged on a surface of the guide which surface is intended to be in contact with the plasterboard that is to be cut. 
     
     
         2 . The guide as claimed in  claim 1 , in which the retaining means are spikes. 
     
     
         3 . The guide as claimed in  claim 1 , in which the stop comprises two parts connected to one another by an articulation, the two articulated parts being equipped with retaining means for holding the plasterboard, the articulation comprising a rotation end stop. 
     
     
         4 . The guide as claimed in  claim 3 , in which the rotation end stop allows a relative rotation of up to 45 degrees, preferably of up to 30 degrees of the articulated parts. 
     
     
         5 . The guide as claimed in  claim 1 , in which the retaining means comprise a section piece designed to hold the board when the latter is forcibly inserted into the section piece. 
     
     
         6 . The guide as claimed in  claim 1 , in which the retaining means are spikes intended to dig into the plasterboard. 
     
     
         7 . The guide as claimed in  claim 6 , in which the retaining means are retractable. 
     
     
         8 . The guide as claimed in  claim 1 , further comprising a rail designed to collaborate, in use, slidingly, with a carriage fitted with the cutting blade. 
     
     
         9 . The guide as claimed in  claim 8 , comprising, on each side of the rail, flats for contact with the plasterboard that is to be cut. 
     
     
         10 . The guide as claimed in  claim 8 , further comprising, at least at one of its ends, a retractable stop means in order, in use, to allow the rail to be coupled to and uncoupled from a carriage fitted with the cutting blade. 
     
     
         11 . The guide as claimed in  claim 8 , comprising, at least at one of its ends, a damping means which, in use, damps the end-of-travel sliding of a carriage fitted with the cutting blade. 
     
     
         12 . The guide as claimed in  claim 7 , in which the spikes are arranged in such a way that, in use, once the plasterboard has been cut, the holes formed by the spikes embedded in the plasterboard are situated a determined distance (d) from the cut which is sufficient that the holes can be filled at the same time as a joint between two plasterboards. 
     
     
         13 . The guide as claimed in  claim 12 , in which the determined distance (d) is between 75 mm and 150 mm, preferably between 70 mm and 120 mm, advantageously between 55 mm and 80 mm, typically 65 mm. 
     
     
         14 . A kit for cutting a plaster board, comprising:
 a guide as claimed in  claim 8 ;
 a cutting blade comprising at least one scoring corner having one flat face and one beveled face, the corner being extended by at least one trimming edge having one flat face and one beveled face which are identical to those of the corner; 
 a cutting carriage comprising a chassis fitted:
 with means intended to collaborate slidingly, in use, with the cutting guide; 
 with a handle, mounted such that it can rotate with respect to the chassis and comprising a grip means, a retractable engagement dog and a housing for a cutting blade; 
 a section piece provided with at least three notches for blocking the rotation of the handle in three angular positions through reversible engagement of the retractable dog, the notches being arranged on the section piece in such a way that, in use, they allow:
 for the first notch, a retracted arrangement of the blade such that it is not in contact with the plasterboard; 
 for the second notch, an arrangement of the blade at an angle a to the plasterboard, in sufficient contact with the plasterboard to score it in order to form a cut edge face; 
 for the third notch, an arrangement of the blade at an angle β to the plasterboard, in sufficient contact with the plasterboard as to trim the cut edge face. 
 
 
   
     
     
         15 . A method of implementing a guide as claimed in  claim 1 , for cutting a plasterboard, characterized in that it comprises the following steps:
 a) providing a plasterboard comprising a layer of plaster and at least one sheet of cardboard or of paper;   b) positioning the rotably mounted stop against one edge of the plasterboard and activating the retaining means that hold the stop in order to hold the stop against the plasterboard;   c) pivoting the cutting guide to position it along a desired direction of cutting;   d) pressing the guide against the plasterboard; and   e) scoring the board along the guide using a cutting blade.   
     
     
         16 . The method of implementation as claimed in  claim 15 , in which step d) consists in driving into the plasterboard spikes which are arranged on a surface of the guide which surface is intended to be in contact with the plasterboard that is to be cut. 
     
     
         17 . The method as claimed in  claim 15  wherein said guide further comprises a rail designed to collaborate, in use, slidingly, with a carriage fitted with the cutting blade, in which step e) comprises the following steps:
 e1) engaging a carriage bearing the cutting blade with the rail of the guide; 
 e2) moving the carriage in order to score the layer of plaster along the guide, from the first edge of the board to the second edge of the board; 
 e3) bending the board along the scored line obtained in the previous step in order to snap the layer of plaster along the scored line and obtain a cut edge face; 
 e4) using the grip means to move the carriage as far as the first edge of the board; 
 e5) moving the carriage in order to trim the cut edge face, from the first edge of the board to the second edge of the board, 
 step e2) and/or step e5) involving cutting through at least one sheet of cardboard or of paper of the plasterboard.